Machine for cutting timber at the surface of the ground.



No. 723,968. PATEN'TED MAR. 31, 1903.

J. H. YOUNG.

MACHINE FOR CUTTING TIMBER AT THE SURFACE OF THE GROUND.

APPLICATION FILED FEB. 28, 1902.

N0 MODEL.

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UNITED STATES JOHN HUSTON YOUNG,

PATENT OFFICE.

OF FILLEY, MISSOURI.

MACHINE FOR CUTTING TIMBER AT THE SURFACE OF THE GROUND;

SPECIFICATION forming part of Letters Patent No. 723,968, dated March31, 1903.

Application filed February 28, 1902. Serial No. 96,154. (No model.)

, To all whom it may concern.-

Be it known that I, JOHN HUs'roN YOUNG, a citizen of the United. States,residing at Filley, in the county of Cedar and State of Missouri, haveinvented a new and useful Machine for Cutting Timber at the Surface ofthe Ground, of which the following is a specification.

The invention relates to improvements in IQ saws.

The object of the present invention is to improve the construction ofsaws and to provide a simple, inexpensive, and efficient one designedfor cutting down trees at the surface of the. ground and capable ofbeing readily operated and of automatically feeding itself laterally,whereby it is advanced to a tree simultaneously with its longitudinalmovement.

The invention consists in the construction and novel combination andarrangement of parts hereinafter fully described, illustrated in theaccompanying drawings, and pointed out in theplaims hereto appended.

In the drawings, Figure 1 is a perspective view of a saw constructed inaccordance with this invention. Fig. 2 is a detail view illustrating theconstruction for connecting the saw-carrying bars with theoperating-levers. Fig. 3 is adetail View of a portion of the'head of oneof the operating-levers. Fig. 4 is a detail view of one of the platesfor connecting the springs to the lever. Fig. 5 is a detail view of thebar for enabling the saw to be car- 3 5 ried from one place to anotherand for causing a tree to fall in the desired direction.

Like numerals of reference designate corresponding parts in all thefigures of the drawings.

1 1 designate similar supporting-frames provided with lower side bars orsills 2, supporting a platform 3 and extending inward beyond the sameand having standards 4 at their inner ends. The standards 4, which aresuitably secured to the sides of the frames, are

supported by inclined braces 5, and they are connected at their upperends by a transverse pivot-rod 6.

Mounted on the pivot-rods are upright opcrating-levers 7, provided withperforations Sto receive the said rods and adapted to be movedtransversely of the frames, as hereinafter explained, to feed asaw-blade9 through a tree. Each lever is provided at its lower end with a curvedhead or portion 10, having a groove 11 in its outer face for thereception of springs 12 and 13 or other flexible connections forsecuring a horizontal saw-carrying bar or plate 14 to the lever. Thespring 12 is centrally arranged in the groove and is socured at theinner end of the saw-carrying plate or bar, and the springs 13, whichare located at opposite sides of the central spring, are secured attheir lower ends to the outer end of the plate or bar 14. The upper endsof the springs are threaded for the reception of nuts 15 and 16 and aresecured by the latter to plates 17 and 18, arranged on the inner andouter ends of the curved portion or head of the operating-lever. Insteadof employing the springs any other suitable flexible connection may beemployed for connecting the saw-carrying plates or bars with the levers.

The saw-blade, which is suitably secured to the inner ends of the platesor bars 14, is fed automatically by means of transversely-disposedcoiled springs 19, connected with the inner ends of 'the plates or bars14 and designed to be located at opposite sides of a tree and to bestaked beyond the same or otherwise secured under tension whereby thesaw is fed through a tree. The lovers are adapted to slide freely in thehorizontal pivots, which are disposed transversely of the machine. Theplatforms are provided with loops 20, adapted to receive a bar 21 forenabling the machine tobe readily carried from one place to another. Thebar is provided at one end with a projection or spur and is adapted tobe placed against a tree to cause the same to fall in a desireddirection. v

The machine is placed against a tree and the transversely-disposedcoiled springs are stretched at opposite sides of the same, and theoperators stand upon the platforms and oscillate the operating-levers,and thereby reciprocate the saw, which is automatically fed through thetree by the said springs.

What I claim is 1. A machine of the class described comprising a pair ofupright operating-levers, means for supporting the operating-levers andfor permitting the same to slide transversely,

a saw-blade connected with and carried by too the operating-levers, anda tension device for feeding the saw transversely and for causing thelevers to slide, substantially as described.

2. A machine of the class described comprising a pair of horizontalpivots, means for supporting the same, a pair of uprightoperating-levers slidable on the pivots, a sawblade connected with andcarried by the levers, and a tension device for feeding the sawtransversely and for causing the levers to slide on the pivots, substantiallyas described.

3. A machine of the class described comprising frames designed to bearranged at opposite sides of a tree, transversely-slidableoperating-levers fulcrumed on the frame, a saw-blade connected with andcarried by the levers, and a pair of tension devices arranged adjacentto the ends of the saw and adapted to feed the same transversely,substantially as described.

4. A machine of the class described comprising a pair of frames havingplatforms,

ots and having curved heads provided with grooves, a saw-blade providedwith plates or bars, resilient connections arranged in the grooves andsecured to the plates or bars and to the levers, and means for feedingthe saw transversely, substantially as described.

JOHN HUSTON YOUNG. Witnesses:

M. M. COOPER, G. A. SMITH.

